A child who weighs 40 kg receives a prescription for acetaminophen 15 mg/kg/dose PO every 4 to 6 hours PRN for fever. What is the maximum daily dose the nurse should administer? (Enter the numerical value only.)
The Correct Answer is ["3600"]
Here's how to calculate the maximum daily dose of acetaminophen for the child:
Calculate the maximum dose per administration:
Maximum dose per kg per administration = 15 mg/kg (given)
Child's weight = 40 kg (given)
Since this is a PRN medication (given as needed), we will calculate the maximum dose per administration based on the prescribed dosage.
Maximum dose per administration = 15 mg/kg/dose * 40 kg
Maximum dose per administration = 600 mg (round to nearest whole number)
Calculate the number of administrations in a 24-hour period (maximum):
Frequency: Every 4 to 6 hours PRN (given)
Since this is a PRN medication, we will assume the maximum frequency (every 4 hours) for calculating the maximum daily dose.
Number of administrations (maximum) = 24 hours / Frequency (hours/administration)
Number of administrations (maximum) = 24 hours / 4 hours/administration
Number of administrations (maximum) = 6 administrations
Calculate the maximum daily dose:
Maximum daily dose = Maximum dose per administration x Number of administrations (maximum)
Maximum daily dose = 600 mg/administration * 6 administrations
Maximum daily dose = 3600 mg
Therefore, the maximum daily dose the nurse should administer is 3600 mg.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.29"]
Explanation
Here's how to calculate the volume (mL) of epoetin alfa the nurse should administer:
1. Client weight conversion:
Client weight: 126 pounds
Medication dosage is based on weight per kilogram (kg).
We need to convert the weight to kg for accurate calculation.
Conversion factor: 1 kg = 2.205 lbs
Client weight (kg) = 126 pounds / 2.205 lbs/kg
Client weight (kg) = 57.14 kg (round to nearest hundredth)
2. Epoetin alfa dosage:
Prescribed dose: 50 units/kg (given)
3. Epoetin alfa concentration:
Vial label: 10,000 Units/mL
4. We need to find the volume (mL) to administer that provides the prescribed dose (50 units/kg) based on the client's weight (57.14 kg) and the medication concentration (10,000 Units/mL).
Calculation:
Total epoetin alfa dose (units): Dose (units/kg) x Client weight (kg)
Total epoetin alfa dose (units): 50 units/kg * 57.14 kg
Total epoetin alfa dose (units): 2857 units (round to nearest whole number)
Volume to administer (mL): Total dose (units) / Concentration (units/mL)
Volume to administer (mL): 2857 units / 10,000 Units/mL
Volume to administer (mL): 0.2857 mL (round to nearest hundredth as requested)
Therefore, the nurse should administer approximately 0.29 mL of epoetin alfa subcutaneously.
Correct Answer is ["100"]
Explanation
Here's how to calculate the infusion rate (mL/hour) for the nurse to administer cefazolin:
We know:
Total volume of solution: 50 mL (given)
Dose of cefazolin: 1 gram (given) = 1000 milligrams (since 1 gram = 1000 milligrams)
Infusion duration: 30 minutes (given) = 0.5 hours (convert minutes to hours by dividing by 60)
We need to find:
Infusion rate (mL/hour)
Calculation:
Calculate the concentration of cefazolin in the solution (not required, but helpful to understand):
We aren't directly given the concentration, but we can see that 1 gram of cefazolin is delivered in 50 mL. Therefore, the concentration is:
Concentration = Dose (mg) / Volume (mL)
Concentration = 1000 mg / 50 mL
Concentration = 20 mg/mL
Calculate the infusion rate based on the total volume and duration:
Infusion rate (mL/hour) = Total volume (mL) / Infusion time (hours)
Infusion rate (mL/hour) = 50 mL / 0.5 hours
Infusion rate (mL/hour) = 100 mL/hour
Since we typically round infusion rates to whole numbers for ease of use with infusion pumps, the nurse should program the pump to deliver 100 mL/hour.
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